Numbers 18:16
“You shall redeem those who are to be redeemed of them from a month old, according to your estimation, for five shekels of money, after the shekel of the sanctuary, which weighs twenty gerahs.”
What does Numbers 18:16 mean?
In ancient Israel, the firstborn son belonged to God and had to be "redeemed" (bought back) by the family through a payment to the priests. This verse sets the price at five shekels of silver, a meaningful but accessible amount that most families could manage. The specific weight standard mentioned (the sanctuary shekel) ensures fairness and prevents confusion from different regional currencies. This practice reflected both gratitude for God's protection and a way to support the priestly community who served the whole nation.